There are no sections here for architectures, Only perl. (no offence)

For your first question....
Ask those who made the project. How can anybody tell you, if he cannot see a sample of it?

As for your second question, if you google you will find more........
Java's Swing architecture, for example, the view and the controller are combined (this is often done in other architectures). In Swing the combined view/controller is called the delegate..........

Layering architecture. Application development is commonly accomplished in a vertical fashion, or at least the division and the estimation of work are determined by defining the application's primary user interfaces..........